Gun structure



UNiTED srrss rrr HENRY I. sIfAMBAUGn AND GEORGE IVI. i/ICCANN, or wAsHINGToNQDIsTItIcT 0E COLUMBIA, AssIeNoEs To UNITED sfrarEs- CRD'NANCE CQMPANY, or wasn- INGTCN, DIsTI'tIcr or COLUMBIA, .a ConreRArIoN or VIRGINIA.

Specification of Letters Patent.

Application led August 14, 1919, Serial No. 317,576. Renewed July 7, 1920. Serial No. 394,472.

T 0 all 'whom t may concern.:

Be it known that we, HENRY J. STAM- BAUGH and GEORGE M. MCCANN, citizens of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Gun Structures, of which the following is a specification. A

For expediency in the manufacturing of ordnance it is necessary to construct and' firing mechanism is correspondingly dis-V placed and misfires result.

It is therefore the purpose Cf our present invention to construct and assemble the tube, jacket and breech ring in a novel manne? which will maintain the desired strength of the body throughout and which will prevent any displacement of the ring and jacket rearwardly relative to the tube under the influence of the stresses and strains incident t throughout the metal wall indicated Vat F in to firing.

With these purposes'in view our invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and f particularly pointed out in the claims.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference Ydenote corresponding parts in the several views, and in which;

Figure 1 is a rear view of the gun body partly in section;

Fig/2, al vertical longitudinal section of the breech end of the gun body constructed in accordance with our invention; Y

Fig. 3, a partial section on the line 3-3 of Fig. 2.

Referring particularly to the drawing v10 indicates the tube, 11 the jacket and 12 the breech ring. The tube 10 is provided near its rear end with a circumscribing flange 13 which is partially received in a Vrecess 14 vide an interlocking engagement between, vthe tube and jacket which positively prevents any movement of the jacket rearwardly relative to the tube. The breech ring 12 is threaded on the jacket 11 and the metal thereof is extended into the space left by disposing the rear end of the jacket forward of the rear end of the tube. By so disposing the rear end of the jacket a considerable cut of metal from breech ring is avoided and the original thickness ofk the walls of the breech recess housing is retained and the tendency of the housing to separate under stress and strain on line a-a in Fig. 3 is removed and such stresses areV distributed gradually to the main structure of the breech ring. It will be further observed that by locating the rear end of the jacket forward of the rear end of the tube a continuous rwall of metal is provided in surrounding relation to the tube at the forward end of the breech housing and this wall of metal serves to tie the breech housing to the main structure of the breech ring across the entire width of the breech recess,thereby distributing the stresses Fig. 2. This will result in a continuous tie of metal not only where the housing is joined to the main structure of the breech ring but also throughout the ywhole Vwidth of the breech recess.

The breech ring 12 is interlocked with the wardly relative Ito the tube it will be apparent that the jacket also serves to lock the breech ring and the associated housing against movement rearwardly relative to the tube. This construction avoids the possibility of such rearward displacement of the breech housing as would produce a misfire as previously referred to. v l

We claim: Y Y

1. In a gun structure, a tube having a circumscribing collar located at a distance from its rear end, a jacket surrounding the tube and having its rear end disposed between the front and rear ends ofthe collar, and a Fatented Nov. 9, 192).

kjacket 11 by a thread connection 15 and as the jacket is locked against movement rear-` breech ring surrounding the tube and jacket tion abutting the rear face of the collar, said in engaging relation with the outer surface ring interlocking with the jacket.

of revolution of the tube between the collar In testimony whereof we aHiX our signaand rear end of said tube, and interlocked tures in the presence of two witnesses. 5 *Wh the Jacket HENRY J.Y STAMBAUGH.

2. In a Gun structure, a tube havin a cir- Y cumscribilg collar, a acket surroundtigng the Y GEORGE M'. MCCANN tube and having a portion abutting the for- Witnesses:

ward face of the collar, and a breech ring y HENRY T. BRIGHT,

10 surrounding the jacket and tube with a por- CARROLL BAILEY. 

